One morning late in May, between three and six a.m., a group of lonely men and women wait to be brought together, like the elements in an equation. Ernst Spengler is about to throw himself out his window. Mylia, terminally ill and in enormous pain, goes out to visit a church. Hinnerk Obst, who's always been told by the neighborhood children that he looks like a murderer, walks the streets with a loaded gun. As these characters are manipulated and...